My daughter and her husband are building a new home. While digging the foundation, the excavator hit an underground spring (artesian aquifer), which flooded the hole. They immediately consulted an engineer, who assured them that with proper preparation (thicker concrete, waterproof membranes, extra sump pump(s), etc.), their new basement will not become an indoor swimming pool. Has anyone had experience with this? And is there any way they can harness and utilize the spring water? I should add that the area in which the spring was found is a future indoor sports court under the garage and is 3 feet deeper than the rest of the basement.